Research Of Two-dimensional Scanning Continuous Transverse Stub Arrayantenna

With the vigorous development of the modern communication system, the demands of the design of the antenna are increasing. On the basis of the present situation, miniaturization and low profile is top priority for the future development of the antenna. Like as the high efficiency, high gain, broadband, multiple frequency segment, beam scanning, circular polarization and dual polarization, these characteristics of the antenna are needed in the future. I propose the planar waveguide CTS(Continuous Transverse Stub) array antenna in this paper, which has many features like as high gain, wide band, beam scanning and polarization multiplexing. These features has the very high research value. In this paper, the work mainly as follows:first,Introduce three types of CTS antenna as well as the present research results briefly;Second, analyse the radiation mechanism of unit of the planar waveguide CTS(Continuous Transverse Stub) array antenna, also set up the simulation model and research all parameters of the unit structure of the antenna, which influence on radiation performance; Third, introduce the basic principle of linear array antenna and analyse several feed that we used commonly. By using parabolic bow antenna, design a type of series feed planar waveguide CTS(Continuous Transverse Stub) antenna array. Finally,by the HFSS simulation, the array achieve VSWR of less than 1.5 at 12- 13 GHz.Maximum gain of the array antenna has reached 24 dBi. Processed into physical, get the figure of standing wave and direction. Fourth, analyse the principle of two-dimensional scanning of the planar waveguide CTS(Continuous Transverse Stub) antenna array,and processed into HFSS simulation, get the figure of standing wave and direction. Fifth,discusses the polarization multiplexing of the planar waveguide CTS(Continuous Transverse Stub) array antenna, by the HFSS simulation, realize the dual polarization and circular polarization.